Device for alining cutter-bars.



E. CAMBURN.

DEVICE FOR-ALINING CUTTER BARS.

APPLICATION FILED MAR. I. 1913.

Patented Nov. 23, 1915.

Z SHEETS--SHEET [N VEN T 013 COLUMBIA PLANDURAPH c0., WASHINGTON, I) c.

E. CA MBURN.

DEVICE FOR ALINING CUTTER BARS.

APPLICATION FILED MAR. I. 1913.

1,161,024, Patented Nov. 23, 1915.

'2 SHEETS-SHEET 2- W'ITNESSES INVENTOR A1,, Allorney p FFIQ ELMERCAMBUEN, or TECUMSEH, M I CH IG AN.

DEVICE ron ALINING CUTTER-Bans.

To all mama may concern:

Tecumseh, in the county of Lenawee and State of Michigan, have invented certain new and useful Improvements in Devices for Alining Cutter-Bars, of which the following is a specification. g j

This invention relates to an improvement in cutter-bar adjusting devices and hasfor its principal object the provision of simple. and effective means which may be readilyv used to aline the cutter-bar of a mowing machine with the pitman-bar.

The above and additional objects are accomplished by such means as are illustrated in their preferred embodiment in the ac companying drawings, described in the following specification and. then more particularly pointed out in the claim which is appended hereto and forms a part of this application.

With reference to the drawings, wherein, I have illustrated, the preferred embodiment of my invention as it is reduced to practice, and throughout the several views of which, similar reference numerals designate corresponding parts; Figure 1 is a top plan view illustrating my alined device in its assembled relation to a cutter-bar. Fig. 2 is a side elevation of the adjusting device as separate from the cutter-bar. Fig. 3 is a section on the line 33 of Fig. 2. Fig. 4: is a longitudinal section. Fig. 5is a detail view showing in perspective the rotating drum and bar supporting shaft. Fig.

6 is .an end view of the drum.

Proceeding now to the description of the drawings, I have illustrated my invention as applied to a cutter-bar 1 and ground shoe 2 of standard type. The alining device itself includes two main elements the casting designated as an entirety in Fig. 1

by the numeral 3 and the rotating elements designated as an entirety by the numeral 4.

The casting 3 is made of any suitable metal and is formed to produce the base plate 5 carrying at its opposite ends the integrally formed upwardly and vertically projecting bearing boxes 6 and 7." The member 6 is formed with a concave recess in its upper face and is provided with a retaining cap 8 cast with a corresponding recess on its under face and adapted to be held in fixed position on the member 6 by the headed bolts 9 operating in suitably Specification of Letters Patent.

mama Nov. 23, 1915.

Application filed Marchl, 1913. Serial No. 751,527.

formed threadedbores. The member 7 is cored. laterally to produce a frusto-conical 7 opening for a purpose hereinafter disclosed. A .plurality'of radially extending internally screnflthreaded openings are formed in the member 7 and communicate with the frustoconical opening."

The rotatable elementt includes a frustoconical drum. 10, from the smaller end of which extends the eccentrically positioned cutter-bar supporting shaftll, thefr'ee end ofwhic'h terminates in the ball member 12. On the larger end of the drum is formed the nut 13. In assembling the device, the plate 5 is bolted or otherwise secured to the shoe 2. The shaft 11 is then mounted within the sleeve 14 of the coupling arm 15, the

drum 10 being disposed within the frustoconical opening of the member 7; The member 12 is seated in the concave recess of the box 6 and the cap 8 is secured in place by the bolt 9. A set screw 17 is threaded into any one of the openings 18 and by engagement with the drum member 10 holds the shaft 11 anddrum 10 in adjusted position. It will be seen that the member 12 in connectionwith the recesses of the members 6 and 8 form a ball and socket joint.

In regard to the operation of the device, the following brief description is sub mitted: If the finger bar 1 by constant contact with obstacles of various nature is I forced backward out of alinement transverse to the line of advancement of the machine, a wrench or other tool is applied to the member 13 and the shaft 11 is turned in the desired direction. Particular attention is now directed to the fact that the finger bar 1 extends at right angles to the member 2 and that'the member 2 is connected to the member 15 by the shaft 11. Therefore, since the member 12 of the shaft 11 is mounted for approximate eccentric rotation in the socket wherein it is seated and the description, as the preferred embodiment, is the most eilicient and practical; yet realizing that the conditions concurrent with the adoption of my device will necessarily vary, I desire to emphasize the fact that various minor changes in details of construction, proportion and arrangement of parts may be resorted to, when required, without sacrificing any of the advantages: of my invenrespectto said frusto-conical opening, the

flopies of this patent may be obtained for 'five' cents each, by addressing the Commissioner of Patents, 5

other of said boxes provided with a removable cap, spherical recesses in the boxing and cap coinciding when the cap is applied means for fastening the cap, the edges of the spherical recess flared, a bar,ra frusto conical drum on one end of the bar, the bar being eccentrically arranged therein, a ball on the other end of the bar coacting with the spherical recess 1n sald boX1ng, tur n1ng means on said drum and means carried by said radial openings for holding the said drum Within the frusto-conical opening.

In testimony whereof I aflix my signature in presence of two witnesses. 7 r

I 7 ELMER'GAMBURN.

WVitnesses: v c

HEBORN LANGAN, WM; LANGAN.

Washington, D. C. 

